Teledyne LeCroy QPHY-BroadR-Reach - Manual (Page 18)

QPHY-BROADR-REACH VARIABLES
Acquire Live Data
If this is set “True”, the script will perform an acquisition after setting the horizontal scale. You can set this
“False” if the waveform(s) being tested are in Memories or will be recalled into Memories.
Demo Mode
If this is set “On” then: “AcquireLiveData” is overridden as if it was set “False”, “SignalIsDifferential” is
overridden as if it was set “True”, “DifferentialSignalSource” is overridden as if it was set to “M1” and the
appropriate waveforms will be automatically recalled into M1 as needed.
Differential Signal Source
This will specify the signal source when "SignalIsDifferential" is set to “True”. This is the difference
between the single ended signals of the differential pair. Potential inputs include all of the channels, all of
the memories and the first four Math functions.
Input Row
Specifies the input row for oscilloscopes with multiple input rows. Input Row A (upper) is default.
Measured Symbol Rate
Specifies the symbol rate to use in the distortion test. If test mode 2 is run this value is replaced by the
precise measured symbol rate. If you do not plan to run Test Mode 2 then please set this variable to a
precisely measured symbol rate from your signal.
Save Waveform Path
The test waveforms will be saved to this path (if “Save Waveforms” is set to yes). The directory will be the
DUT name entered at the beginning of the test.
Save Waveforms
Specifies whether waveforms will be stored into a subdirectory of the Save Waveform Path.
Signal Is Differential
Specifies whether the input signal is differential. If set to false the oscilloscope will calculate the
difference between Signal Source P and Signal Source N to serve as the differential signal.
Signal Source N
Specifies the negative side of a pair of singled ended signals. The default is Channel 3.
Signal Source P
Specifies the positive side of a pair of singled ended signals. The default is Channel 2.
Stop On Test
Specifies if the user would like to stop and view the results after each time the results are saved. This
gives the user a chance to acquire new data or adjust the settings before proceeding with the test.
Test Mode 4 – Distortion – Disturber
The BroadR-Reach spec requires a disturbing sine wave, Vd, to be applied to the test fixture during the
distortion test. This variable enables the distortion test to be performed with or without the disturbing sine
wave applied to the test fixture. The default is Yes.
18 922533 Rev B